I wanted to get that glass cube originally, but the plastic one was $6 and I liked the inner square, but it's so heavily planted you can't see it anymore anyway. Good find!
Let me know if you find a good HOB filter, I may just toss my plastic cube and "upgrade" -- it's getting pretty scratched up. Awesome that it came with a little ambient light!
You know... I'm actually going to Petsmart to pick one up, I need a temporary housing for my blue rilis (cull) coming in the mail until I get the 9g scaped.